kartṛ́ mfn. one who makes or does or acts or effects, a doer, maker, agent, author (with gen. or acc. or ifc., cf. bhaya-kartṛ, &c.) RV. AV. &c. MBh. Mn. &c
• doing any particular action or business, applying one's self to any occupation (the business or occupation preceding in the compound, cf. suvarṇa-kartṛ, rājya-k○, &c.)
• one who acts in a religious ceremony, a priest ŚBr. ĀśvGṛ. &c
• (tā), m. the creator of the world ŚBr. xiv Yājñ. iii, 69
• N. of Vishṇu Pañcat
• of Brahman L
• of Śiva L
• (in Gr.) the agent of an action (who acts of his own accord [sva-tantra]), the active noun, the subject of a sentence (it stands either in the nom. in active construction, or in the instr. in passive construction, or in the gen. in connection with a noun of action
• it is opposed to karman, the object) Pāṇ. &c
• one who is about to do, one who will do (used as periphr. fut.) MBh

Sanskrit-English Dictionary, by M. Monier William